Air baffle for rayon cake driers



Nov. 30, 1937. H. G. BLACK AIR BAFFLE FOR RAYON CAKE DRIERS Filed Jan.28, 1936 Patented Nov. 30, 1937 UNITED STATES PATENT oFF cs AIR-RAFFLEFOB..RAYON CAKE DRIERS Harold G. Black, Phlladelphim la assignor toProctor & Schwartz, Incorporated, Philadelhia, Pa., a corporation ofPennsylvania Application January 28, 1936, Serial No. 61,232 6 Claims.(CI. 34-26) 1 gaseous medium are circulated transversely of and acrossthe trucks or racks, substantially axially of the cakes which are hungon pegs or other supports projecting horizontally and laterally from acentral support or supports arranged l and extending longitudinally ofthe truck or rack. In the form of drier and under the process describedabove the areas of the inside or core openings of the perforatedcylinders, spools or cakes are so large that a considerable volume ofthe drying medium passes directly through the core openings withoutcoming into contact with the yarn wound on the outside of the cylinders,

etc., consequently an excessive amount of drying medium is necessarilyrequired to dry the yarn. The object of the present invention is todeflect a large percentage of the drying medium which normally passesthrough the core openings of the cakes, so that this deflected mediumwill pass around the outside of the cakes instead of through the centersthereof, whereby'the deflected medium will contact with the yarn woundon the outside of the cakes.

Aclear understanding of the means for deflecting the drying medium maybe had from the following description, together with the illustration ofthe accompanying drawing, wherein:

Fig. 1 is an end view of a truck or rack with a few cakes of rayon yarnsupported thereon;

Fig. 2 is a vertical longitudinal sectional view taken on the line 2-2,Fig. 1;

Fig. 3 is a perspective view illustrating the preferred form ofdeflector; and

' Fig. 4 shows a modified form of deflector.

As shown in Figs. 1 and 2, the truck or rack comprises a. horizontalbase or bottom floor l, a vertically spaced and parallel top or roof 2,comer posts 3, 3 and center posts 4, 4 which latter are arranged in acommon vertical plane centrally disposed with respect to the sides ofthe truck and together with the corner posts 3, 3 are connected at theirtop and bottom ends to the roof 2 and floor l respectively.

Secured to and extending laterally from the opposite sides of each ofthe center posts 4 is a series of pegs 5 which in the present instanceare each composed of a heavy gage wire or red bent into a U-shape orhairpin form with the legs 6, 8 of each peg welded or otherwise securedto a center post 4.

As shown in the drawing, the center posts 4 5 are rectangular incross-section and arranged on the truck with the larger dimension oftheir respective cross-sections extending transversely of the truck andwhereby the narrow edge of each post is presented to the flow of dryingmedi l0 which, as noted above, travels across the trucks and lengthwiseof the pegs 5.

Each peg 5 is adapted to support a pluralityof spools or cakes z, and asshown in Fig. 2 the inner diameter of the cake or the cylinder on whichthe 15 rayon is wound is such that the cakes may be readily slipped overthe outer bent ends I of the pegs and onto spaced legs 6, 6 thereofwhereby the legs frictionally engage the inner diam-' eters of the cakesa: and support the cakes against free or loose movement on the pegs 5.

As shown in the drawing, the deflectors forming thesubjectof the presentinventionare in the form of round discs l0 each of a diameter less than.the inner diameter ll of the cake :0, 2;, whereby an annular space I2 isprovided between the outer peripheraledge of each deflector I0 and theinner diameter of a cake :0.

The deflector discs :2: may be placed at any desired point along eitheror both of each pair of the pegs 5, which are substantially aligned andproject laterally in opposite directions from the some portion of acenter post 4.

In the preferred form of the invention, the. deflector discs Ill aresecured to one or the same 35 side of each and all of the central posts4 as by welding and each in a position between and .spaced equally fromthe legs 6', 6 of the pegs 5, v

as clearly shown in Figs. 1, 2 and 3, whereby I the deflector will besubstantially concentrically 40 disposed with respect to the innerdiameter of any cake or cakes which may be placed on the peg and whereinit may be said that the deflectors are concentric to the axes of thepegs 5, 5 respectively. 5

In Fig. 4, the deflector disc Illa is shown as. being located adjacentthe outer or bent end 1 of the peg 5, and provided with ears l3, l3which are secured to the legs 6, 8 of the peg as by welding.

1 and 2 in particular, it will be clear that air blowing across thetruck in-the direction of the arrows in Fig. 1, will pass axially of thepegs 5 and the cakes :c, x which are axially aligned From the above, andupon referring to Figs.

- heat is required to heat the air in condition.-

therewith and thereon, and will enter the inner diameters or cores ll ofthe cakes. In so doing, a larger part 01' the volume of air passing intothe core openings ll of the cakes a: will strike against the deflectorsl located therein and which will cause a banking or retardation of theflow of air through the core openings I I, leaving a smaller percentagepass through the annular openings I2 and deflecting the largerpercentage around the outside of the cakes :n, to and through the spacesI5 formed between adjacent cakes, which, as shown in Fig. 2, are instaggered relation to each other on the truck or rack.

By this invention, it has been found that a smaller volume of dryingmedium is needed than has been required heretofore. A smaller volume ofair results in a saving in power to maintain circulation in the drierand a smaller amount of Thus it will be seen that while the invention isof a very simple nature and inexpensive to produce and install itresults in material savings to the user in the way of power and heat;

I claim:

1. In a drier for rayon cakes each having a core opening, means forsupporting said cakes, means for passing a current of conditioningmedium in a direction axially of said cakes and through said coreopenings, deflectors disposedsubstantially within the core openings ofpredetermined cakes respectively in planes transverse to the axes ofsaid core openings and of lesser area than the cross-sectional areas ofsaid core openings leaving relatively narrow passages for said mediumbetween the marginal edges of the deflectors and the walls of said coreopenings and deflecting to the outsides of said cake portions of theflow of said medium which normally passthrough said core openings, andmeans for supporting said deflectors in said positions relative to saidcore openings. 1

2. The combination in a rack for drying rayon cakes each having a coreopening, a vertical support, a series of pegs extending substantiallyhorizontally from said support for entrance into said core openings tosupport said cakes, a series of deflectors disposed in planes transverseto the axes of said pegs respectively, the areas of said deflectorsbeing less than the areas of the core openings of said cakesrespectively, and means for supporting said deflectors in positionsrelative to said pegs to form relatively narrow passages forconditioning medium moving in a direction axially to said pegs betweenthe marginal edges of said deflectors and the walls of said coreopenings respectively when said cakes are mounted on said pegs.

3. The combination in a rack for drying rayon cakes each having a coreopening, a support including a peg comprising a pair of substantiallyparallel relatively spaced legs adapted to pass into said openingfor-holding the cake, and a deflector between said legs and extendingtransversely of said opening and deflecting around the outside of thecake-drying medium which normally would pass through said opening.

4. The combination in a rack for drying rayon cakes each having a coreopening, a support comprising a vertically disposed bar of rectangularcross-section arranged with the greater dimension extending in thedirection of flow of drying medium, a peg comprising a pair ofsubstantially parallel relatively spaced legs secured to saidrectangular bar and projecting laterally therefrom and adapted to passinto saidopening for holding the cake, and a deflector between said legsand extending transversely of said opening and deflecting around theoutside of the cakedrying medium which normally would pass through saidopening.

5. The combination in a rack for drying rayon cakes each having a coreopening, a support comprising a vertically disposed bar of rectangularcross-section arranged with the greater dimenf sion extending in thedirection of flow of drying medium, a peg comprising a pair ofsubstantially .parallel relatively spaced legs secured to said cakeseach having a core opening, a support including a peg comprising a pairof substantially parallel relatively spaced legs adapted to pass intosaid opening for holding the cake, and a deflector comprising a circulardisc disposed between said legs concentric to said opening and extendingtransversely of said opening and deflecting around the outside of thecake-drying medium which normally would pass through said opening.

HAROLD G. BLACK.

